In Czech republic new campaign with invisible men was launched. I am wondering how to achieve same effect. I tried to google the way how to do it but I cant imagine how invisible driver of taxi could be made using green screen. Does anybody have any idea? Thank you for all reponses in advance!

Hard to say because there are a lot of not overly difficult ways to do that. There are two clips totaling no more than five seconds, less than 125 frames, so not that much work, I'd guess. A couple of ideas to start things off:

- For the scene inside the vehicle looking out past the driver's seat and steering wheel, one could composite the exterior scenes (in other word, green screen all the vehicle glass,rear view mirror and motion of the steering wheel. The tires could also have been on tracks and they could have rigged it to operate remotely as well. There was a lot of motion blur in the first half of that scene so that helps keep the workload down even more.

- The scene from the exterior would have been pretty easy, I think -- just, steer from below the dash.

However they did it -- nicely done advert!

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The simplest way to do the car trick is - rig it with another steering wheel! The guy on the right is actually driving, with either pedals, remote or a small hidden steering, and the 'real' one turns because its loosely connected to the car wheels.

The rest is roto. Once you sell the 'big' effect, the audience will be vowed by the lesser ones. Hope this helps.